this rifle should be marked .22S,.22L,and .22LR.
You may be able to find an instruction manual on eBay or Auctionarms.com
No such animal. Try "Remington M/572". (.22lr cal., pump action rifle)
Try e-gunparts.com
100-1000 or more depending on specifics
The rifle will shoot .22lr .22 short, and .22 long. Only .22lr will cycle the action and load the next round. .22 Short and long will function as bolt action only.
Depends on the shooter, the ammo and the barrel.Edit: Correct, also, if you're looking for a used Husqvarna 22LR the previous owner might have used corrosive ammo.
The 802 is a more than decent bolt action .22 rifle. It fires the .22 long rifle (.22LR) cartridge. It's a great gun.
Fire all the different types of 22LR you can afford. One or more brands will do better in your rifle.
The best one you can afford that was designed for 22LR rifles.
50-100 USD
http://www.faqs.org/qa/qa-17374.html